Doppelsteg an Resonanzboeden fuer Fluegel und Klaviere,申请号DED539043D-传众专利搜索

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发明名称	Doppelsteg an Resonanzboeden fuer Fluegel und Klaviere
摘要
申请公布号	DE539043(C)	申请公布日期	1931.11.21
申请号	DED539043D	申请日期
申请人	RICHARD SANDER	发明人
分类号	G10C3/08	主分类号	G10C3/08
代理机构		代理人
主权项
地址

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